简介：ThemixturemodelofAl85Y4Nd4Ni7alloyinwhichapartiallycrystallizedamorphousalloyisregardedasananocompositeofanAlnanoparticleandaremainingamorphousmatrixispresented.Itsevolutionintheprocessofcrystallizationhasbeeninvestigatedbydifferentialscanningcalorimetry(DSC),X-raydiffraction(XRD),andtransmissionelectronmicroscopy(TEM).Mainlyamorphousstructurewithα-Alnanocrystalsembeddedintheamorphousmatrixhasbeenrevealedbymeltspiningthealloy.Crystallizationisshowedtooccurinthreestages:(1)crystallizationofamorphousalloyandformationofAlNiY,AlNdNiandunknowncrystallinephases,(2)formationofAl3YandAl3Nd,and(3)formationofAl3Ni.

简介：通过对萨北开发区油田土壤电化学与化学性质的测试，即土壤电阻率、土壤氧化还原电位、土壤金属腐蚀电位、pH值、CO3^2-、HCO3^-以及含水量的测试，绘出了这些参数与土壤腐蚀率曲线关系图，从而对开发区的腐蚀状况进行了综合评价。通过调查，对不同区域的埋地管道及设备采取什么样材质及防腐等级提供了技术依据，为今后的防腐规划设计提供可靠的技术保障。

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简介：AWaveguideSwitchDesignUsingElectromagneticBandgapSubstrates；Abradingofbabbittmetalmouldwithhighefficiency；ChillcastingoflocomotivedieselIODIO0cylinderliners；Complexevaluationofmaterialsformetalmolds；CurvedSiliconElectronics；Developmentofcurvedholemachiningwithelectrochemicalmachining(lstreport)-processingmethodbyactuator-lesstool；DevelopmentofCurvedHoleProcessingTechniqueUsingElectrochemicalMachining(2ndReport)-Controllabilityofcurvatureofmachinedcurvedhole-

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简介：本文从无由化阻燃的机理出发，分析了常用的材料的特性，提供了常用的参考配方。还罗列了基材厂家的一些这类产品的特性。

简介：本文重点介绍在“无铅”FR-4覆铜板开发工作中，设计思路、基本配方以及所取得的成果．

简介：ToinvestigatethedegradationofcorrosionresistanceofZircaloy-4inLiOHaqueoussolution,SIMS(secondaryionmassspectrometry)analysiswasperformedtoexaminetheprofilesofLi+,K+,andOH-inoxidelayersformedinthesameconcentration(0.1mol/L)LiOHandKOHsolutions.Eventhoughtheoxidelayershaveanequalthickness,thepenetrationdepthofK+isshallowerthanthatofLi+,andthepenetrationdepthofOH-corrodedinKOHsolutionisalsoshallowerthanthatcorrodedinLiOHsolution.ItshowsthatthediffusionofOH-intooxidelayerisaccompaniedbythecorrespondingcation.ThedifferenceofdegradationeffectofLiOHandKOHsolutionsonthecorrosionresistanceofZircaloy-4wasdiscussed.

简介：本文阐述了我厂南一区油水井套管、埋地管道在土壤环境中的腐蚀因素，以及分散控制式区域性阴极保护技术在萨中油田应用情况，分析了南一区阴极保护的应用效果，提出了一些问题和建议。

简介：本文根据辽河油田恶劣的气候和苛刻的土壤腐蚀环境，针对冬季熔结环氧涂层埋地管道现场快速补口的施工要求和技术性能，综合分析了国内外埋地管道熔结环氧涂层的外补口技术状况，通过性能和现场实际应用的比较，选用国家金属腐蚀控制工程技术研究中心研制的SLF冬季外补口技术，该技术具有良好的现场施工性和长效防腐性。

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简介：苏丹1／2／4油田年产原油1000万吨。油田内部集输管线600余km，集输干线100km，连接5个现场处理系统(FPF)和中心处理站(CPF)。优质原油经1500多公里的长输管道到达苏丹港出口。油田设施的设计寿命为25年。较为完善的防腐蚀系统设计覆盖了从井下套管、集输管线、输油干线到采油厂设备的几乎所有设施。本文对油田的防腐蚀系统的全貌进行介绍。

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简介：介绍了G4-2油罐浅色防静电防腐涂料所用原料、制备方法和性能测试，着重讨论了成膜物、导静电材料、固化剂对涂料性能的影响。

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简介：Dynamicsinpartialtransientliquidphasebonding(PTLPbonding)ofSi3N4ceramicwithTi/Cu/Timulti-interlayerwassystematicallystudiedthroughmicro-analysisofjointinterfaces.Theresultsshowthatgrowthofreactionlayerandisothermalsolidificationprocessiondoatthesametime.GrowthofreactionlayerandmovingofisothermalsolidificationinterfaceobeytheparaboliclawgovernedbythediffusionofparticipatingelementsduringthePTLPbonding.Coordinationoftheabovetwodynamicsprocessisdonethroughtimeandtemperature.Whenreactionlayerthicknessissuitableandisothermalsolidificationprocessisfinished,thehighbondingstrengthatroomtemperatureandhightemperatureareobtained.

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简介：SphericalLiFePO4andLiFePO4/Ccompositepowdersforlithiumionbatteriesweresynthesizedbyanovelprocessingrouteofco-precipitationandsubsequentcalcinationsinanitrogenandhydrogenatmosphere.TheprecursorsofLiFePO4,LiFePO4/CcompositeandtheresultantproductswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscope(SEM),andtheelectrochemicalperformanceswereinvestigatedbygalvanostaticchargeanddischargetests.TheprecursorscomposedofamorphousFe3(PO4)2·xH2OandcrystallineLi3PO4obtainedintheco-precipitationprocessinghaveasphere-likemorphology.ThesphericalLiFePO4derivedfromthecalcinationsoftheprecursorat700℃for10hinareductionatmosphereshowsadischargecapacityof119mAh·g-1attheC/10rate,whiletheLiFePO4/Ccompositewith10wt.%carbonadditionexhibitsadischargecapacityof140mAh·g-1.TheelectrochemicalperformancesindicatethattheLiFePO4/CcompositehasahigherspecificcapacityandamorestablecyclingperformancethanthebareolivineLiFePO4duetothecarbonadditionenhancingtheelectronicconductivity.